GENERAL DESCRIPTION
●The AD1852 is a complete, high performance, single-chip, stereo digital, audio playback system. It is comprised of a multibit, Σ-Δ modulator, digital interpolation filters, and analog output drive circuitry. Other features include an on-chip, stereo attenuator and mute, programmed through an SPI-compatible serial control port. The AD1852 is fully compatible with all known DVD formats, including 192 kHz, as well as 96 kHz sample frequencies and 24 bits. It is also backwards compatible by supporting 50 μs/15 μs digital de-emphasis intended for Red Book compact discs, as well as de-emphasis at 32 kHz and 48 kHz sample rate.
●FEATURES
● 5 V stereo audio DAC system
● Accepts 16-bit/18-bit/20-bit/24-bit data
● Supports 24 bits, 192 kHz sample rate
● Accepts a wide range of sample rates including 32 kHz, 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, and 192 kHz
● Multibit Σ-Δ modulator with perfect differential linearity restoration for reduced idle tones and noise floor
● Data-directed scrambling DAC—least sensitive to jitter
● Differential output for optimum performance
● 117 dB signal-to-noise (not muted) at 48 kHz sample rate (A-weighted mono)
● 114 dB signal-to-noise (not muted) at 48 kHz sample rate (A-weighted stereo)
● 117 dB dynamic range (not muted) at 48 kHz sample rate (A-weighted mono)
● 114 dB dynamic range (not muted) at 48 kHz sample rate (A-weighted stereo)
● −105 dB THD+N (mono application circuit)
● −102 dB THD+N (stereo)
● 115 dB stop-band attenuation
● On-chip clickless volume control
● Hardware and software controllable clickless mute
● Serial (SPI) control for: serial mode, number of bits, sample rate, volume, mute, de-emp
● Digital de-emphasis processing for 32 kHz, 44.1 kHz, 48 kHz sample rates
● Clock autodivide circuit supports five master-clock frequencies
● Flexible serial data port with right-justified, left-justified, I2S-compatible and DSP serial port modes
● 28-Lead SSOP plastic package
●APPLICATIONS
● High end
● DVDs, CDs, home theater systems, automotive, audio systems, sampling musical keyboards, digital mixing consoles, and digital audio effects processors
